Siphonic flushing apparatus



M. J. McCLOUD. SIPHONIC FLUSHING APPARATUS.

APPLICATION FILED OCT. 17, I919- Paten'ted Aug; 17, 1920.

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INVENTOR v'c/zae J.

M. J. McCLOUD. SIPHONIC FLUSHING APPARATUS.

APPLICATION FILED. OCT. 17, 1919.

I I l W o I a I V OI G0 z ,I IIIIIIII 2 SHEETSSHEET 2.

Patented Aug. 17, 1920.

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R O T N E V m lziaezlmwz,

BY V

ATTORNEY UNITED ;STAT ES PATENT OFFICE.

MICHAEL J. iviccnoon, or NEW YORK, N. Y.

SIPHONIC rnUsHING APPARAT S.

Specificationof Letters Patent.

Patented A11 17, 1920.

Application filed October 17, 1919. Serial No. 331,328. y

To all-whom it may concern.-

lio it known that I, lvl ciiann J. hKlcCrLoUn, a citizen of the UnitedStates, and a resident of the borough of Manhattan, city, county, andState of New York, have invented certain new and useful Improvements inSiphonic Flushing Apparatus, of which the following is a specification.

My improvements relate to flushing apparatus of the siphon type used inconnection with elevated tanks for effecting the temporary flooding andwashing out of water closets etc.; and my object is to attain a simple,cheap, solderless structure of few parts, of direct action, andaffording the least possible resistance thereto, while easily capable ofregulation and control, all as hereinafter fully set forth; theinvention consisting in the specific construction, arrangement andcombination of parts described and claimed, and distinctive featuresbeing the form of the goose neck, the construction of the starter pistonand its valve flaps; and of the tube and sleeve for controlling andlimiting siphonic action.

In the accompanying drawings,

Figure 1, is a vertical sectional elevation of a water tank equippedwith my improved flushing apparatus;

Fig. 2, is a central vertical section of my siphonic flushing means,upon a larger scale than in Fig. v1, showing the starter p ston raised,and the siphonic control tube lowered; i i y Fig. 3, is a perspectiveview of the starter piston and valves; I

Fig. l, is a central longitudinal section oi one construction of mysiphonic control sleeve and tube; y y

Fig. 5, is a central longitudinal section of another construction of mysiphonic control sleeve and tube;

Fig. 6, is a cross section taken upon the plane of line 66, Fig. 5; y i

Fig. T,is a view of the under side oi: the starterpiston;

Fig. 8, is a section thereof taken upon the planeof line 8--8,Fig. 7; iv

Fig. 9, is a. detail View of the starter pis- T represents any kind of aflushing tank or reservoir of ordinary or desired construction, I, beingthe water inlet valve controlled by the float F, and rod f, 111:} mannerwell known in the art.

i b, is my siphonic flushing device, consid ered as a whole. Itsstationary parts consist essentially of the discharge tubecl, the gooseneck g, the starter cylinderc, and the siphon-break tube 6. Thedischarge tube cl, constitutes the stand pipe on which the other partsare supported. It is formed with external screw threads cl, (P, (Fig. 2at base and top; the thread (V, at the bottom screwing into the femalethreaded upper endofthe coupling pipe a, which latter ex :tends throughand Jrojects beyond the floor t, of the tank T.

"Ihe lowerportion of the coupling a, is externally screw threaded. for

engagement with a lock nut a, and the fe male threaded upper end of theflushing pipe 6, which latter extends to. the water closet basin orother article to be flushed.

The. lower end of the throat g, of the goose neck 9, is female threadedfor engagement with the male thread (F, on the upper end of the standpipe (Z, and the lower portion of the inverted trumpetshaped mouth ofthe goose neck g, is also female screw threaded for engagement with theexternal screw thread c, upper end of the starter cylinder 0. Thisinverted trumpet-shaped mouth 9 of the goose neck g, is a peculiar andnovel feature of my construction and an rangement of parts, covering andinchiding, as it does, thewhole area of the upper end of the startercylinder 0, and converging from thence gradually and uniformly into thecross area of the discharge passage 9, g, (Z, so as to present lines ofleast resistance to the outflow of water from the tank T, as hereinafterset forth.

In axial alinement with the center of the starter cylinder 0, thetrumpet shaped mouth portion 9 0t thegoose neck g, is formed with thecylindrical bearing sleeve y, for

the lateral support-and control of the piston rod p, of the starterpiston P.

In a simllar manner the inlet port g, for the air'break is positioned 1nthe throat g, in approximate axial alinement with the center of thedischarge pipe (Z, said inlet port 9, being formed in a nipple castintegral with the goose neck g. The outer extension of this nipple isfemale threaded for the reception of the externally threaded upper endof the siphonic break tube I), which is pendent therefrom, extendingdownward parallel to the discharge pipe (Z, to the same level as theopen bottom of the starter cylin der 0, or approximately so,i. 6., to alevel slightly above the bottom or floor t, of the tank T. j

The siphonic break pipe 6, is provided for the admission of air to thegoose neck 9, to terminate siphonic suction therein when the water levelin ,the tank T, is lowered to a prescribed level by the discharge ofwater therefrom. If the break pipe Z), were continuous without openingto tank except at its lower extremity it is obvious that the latterwould prescribe the low water level of the tank T; butin order to affordmeans for regulating the height of this prescribed level, I form saidsiphonic break pipe Z), either with apertures 0, b If, at diiferentheights, or with one or more continuous longitudinal apertures 6*,(Figs. 5 and G) 'as may be 1ireferred'; and also provide the said breakpipe I), with an adjustable regulator sleeve R, by means of which thelevel ot'air admission to the break pipe may be prescribed 'to meet thevarying requirements and exigencies of use.

The regulator sleeve R, is a tube of slightly greater main diameter thanthe siphonic break tube Z), its upper extremity .being contracted toform a close-fitting .cylindr'ical'bearing portion r, which contactswith the exterior of the break tube snugly, and with suflicientfrictional resistance to sustain the sleeve R, on the tube Z). That isto say,-the"regulator sleeve R, is slidable on the air break tube Z),but also suliiciently adherent thereto to admit of its being positionedas desired along the length thereof.

Either end of the regulator sleeve B, may be used to prescribe the lowwater level in the tank T. Thus in Figs. land 5, the lower end thereofis shown as uncovering the lower apertures I), in one case, and'thelower end of the continuous longitudinal slot 6*, in the other; while inFig. 2, the upper extremity of the regulator sleeve R, is withdrawnbelow the upper apertures of the break"tube 'b,'the result being thesame in either case in that the horizontal level at which airshall beadmitted to the break tube as the water recedes from the tank isprescribed by said regulator sleeve, which thus also, in other words,determines the low Water level of the tank, and hence the volume ofwater-to be discharged therefrom by siphonie action through the flushingapparatus. 7

The advantage of'the continuous longitudinal slot 6", in the break tube6, shown in Fig. 5, is that italtords greater scope and delicacy ofadjustment of low water level as compared with the apertures b, 6 6 atdifferent heights in said tube Z). I Otherwise: the function of. theregulator sleeve L R, isv essentially the same in either case.

' The upper end ofthe piston rod 79, is connected 'by a link Z, with'theusual actuating lever L. The lower extremity of: the piston rod 7), isscrew threaded and engages with the female threaded boss 1), in thecenter of the cross bar 1) of the annular rim said rim 2), and crossbar 1) constituting the piston base upon the upper side of which aremounted the two flap valves r, These flap valves are die madeduplicates, only reversed in position as related to each other. as willbe understood by reference to Fig. 5), particularly,the knuckles 2:, 2;,interlocking and being coupled together by pintles g, as shown in Figs.7 and 8. That is to say, two pintles Q, are used, positioned one on eachside of the piston rod p. their inner ends being screw threaded and bentover to pass through holes formed for the purpose in the cross bar p andthe protuberant ends of the pintles being then secured by clench nuts y,g.

This construction of flap valve piston is simple, cheap, and efl'ective,being well adapted to the requirements of continuous use in flushingapparatus of this character.

The operation of my improved llushing apparatus is substantially thesame as of others of this class, the novelty in the present caseconsisting essentially in the specilic structure. Thus, the lifting ofthe piston l raises water into and beyond the goose neck g, therebystarting siphonic suction tor the withdrawal of the flushing waterthrough the discharge pipe (Z,the flap valves r. 1'. of course openingautomatically for the purpose when the piston has reached the limit ofits up stroke, and remaining open during the descent of the piston tonormal position. and as long as the siphonie flow of water is maintainedthrough the starter cylinder c. goose neck and discharge pipe (1. Whenthe water thus withdrawn from the tank lowers the alter level therein tothe height of air admission to the break tube 6, prescribed by theregulator sleeve R, air ascends into the goose neck g, and siphonicaction terminates; and this is accomplished without gurgling or suckingnoise because the air break inlet g, injects the air into the throat g,of the goose neck 9, below the inner apex of the goose neck as shown inFigs. 1 and 2,-this being an important and distinctive feature of myconstruction of apparatus, and one which renders it practicallynoiseless in operation in that the cause is eliminated by theintroduction of the siphonic air break directly into the downward flowof *ater below the turnin point 9*, as above stated.

It is to be noted that the several parts of my apparatus are assembledand united by screw threads entirely, obviating the use of solder, whichis objectionable for obvious reasons; that the whole device is simpleboth in structure and operation; and that ample provision is made foreconomizing the use of water and limiting the quantity flushed to theactual needs and requirements of work to be accomplished.

What I claim as m invention and desire to secure by Letters atent is,

1. I11 siphonic flushing apparatus of the character designated, incombination with the starter cylinder and piston, discharge pipe, andsiphonic air break tube and regulator sleeve, a goose neck interposed between the starter cylinder and the discharge pipe and formed with aninverted trumpet shaped mouth portion inclosing the upper end of thestarter cylinder and depending air break inlet between such month andthe siphonic air break tube, said trumpet sha ed mouth portion beingformed with a cy indrical bearing sleeve for the piston rod in axialalinement with the center of the starter cylinder, for the purposedescribed.

2. In siphonic flushing apparatus of the character designated, incombination with the starter cylinder and piston, discharge pipe, andsiphonic air break tube and regulator sleeve, a goose neck interposedbetween the starter cylinder and the discharge pipe and formed with aninverted trumpet shaped mouth portion inclosing the upper end of thestarter cylinder, and with a siphonic air break inlet port depending inalinement with the discharge tube intermediate the same and thegoose-neck and opening into the" discharge throat below the apex of theturn bend of the neck, forthe purpose described.

3. In siphonic flushing apparatus of the character designated, incombination With the starter cylinder and piston, discharge pipe, andsiphonic air break tube and regulator sleeve, a goose neck interposedbetween the starter cylinder and the discharge pipe and formed with aninverted trumpet shaped mouth portion inclosing the upper end of thestarter cylinder, said trumpet shaped mouth portion being formed with acylindrical bearing sleeve for the piston rod in axial alinement withthe center of the starter cylinder, said goose neck being also formedwith a siphonic air break inlet port depending in alinement with thedischarge tube intermediate the same and the goose neck and opening intothe discharge throat below the apex of the turn, for the purposedescribed.

4. In siphonic flushing apparatus of the character designated, incombination, a starter cylinder and piston, a discharge pipe, a gooseneck interposed between the starter cylinder and the discharge pipe andformed with an inverted trumpet-shaped mouth portion inclosing the upperend of the starter cylinder, said trumpet shaped mouth portion beingformed with a cylindrical bearing sleeve for the piston rod in axialalinement with thecenter of the starter cylinder, said goose neck beingalso formed with a siphonic air break inlet port depending in alinementwith the discharge tube intermediate the same and the goose-neck andopening into the discharge throat below the apex of the turn bend of thegoose neck, an air break inlet tube connected with saidair inlet port inthe goose neck and formed for the admis sion of air at different levels,and a regulator sleeve fitting over said air break inlet tube, of largermean diameter than the latter and formed with a contracted cylindricalbearing portion for slidable frictional contactual engagement with thesaid air inlet break tube, for the ur ose described.

MIGI IA L J MoCLOUD. W'itne sses GEO. WM. MIA'l'l, Dono rnr Mm'r'r.

